JPH11323808A - Paving material, manufacture thereof, and execution method making use of paving material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paving material capable of being preserved for a long period of time and freely adjusting a usable time. SOLUTION: After adding a cement setting retarder to an asphalt emulsion, the asphalt emulsion, cement and aggregate are mixed (S1) with each other in the weight ratio of asphalt emulsion to cement of 99-20:1-80 except the weight of the setting retarder. A paving material (S2) obtained by the constitution can be preserved for a long period of time. Cement hardening accelerator is added (S4) to the paving material (S2), and a usable time can be freely adjusted by adjusting an amount of addition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pavement material, a method for producing the same, and a construction method using the pavement material.

[0002]

As a pavement material for a surface layer and a base layer, a room temperature pavement material in which cement and aggregate are mixed with an asphalt emulsion as a binder in a dedicated plant is known. In the construction used,
Asphalt paving machines and special special machines are used,
The flexibility of the asphalt pavement and the simplicity in construction can be obtained, and the durability of the cement concrete pavement can be obtained.

For example, it is known to mix cement to promote hardening in slurry sealing and microsurfing, in which a slurry-like mixture of aggregate, asphalt emulsion and water is spread on a road surface, and rapid hardening is required. As a road surface repair method, asphalt emulsion is used as a binder, and a room temperature pavement material containing cement is manufactured and constructed using a dedicated manufacturing machine and a construction machine. The slurry seal and the microsurfing can provide effects such as improvement of water resistance of the pavement, correction of unevenness on the uneven road surface, and recovery of slip resistance as a protective layer on the cracked road surface.

However, in the above-mentioned pavement material in which asphalt emulsion and cement are mixed, the time from the production of the pavement material to the application thereof is limited to 1 to 2 hours, and long-term storage is impossible. Therefore, there is a problem that the operation efficiency of the plant is inferior, and if the construction is postponed due to a sudden change in the weather or the like, the produced pavement material is wasted and material loss occurs. In addition, it is necessary to construct a dedicated plant for manufacturing, and the transportation time from the plant is also limited to 1 to 2 hours, so that there is a problem that the application area is limited to a very small part. Furthermore, in actual construction, it is difficult to ensure quality unless a special special machine is used. Also, it is difficult to adjust the pot life of the paving material, so it is susceptible to weather conditions, aggregate temperature, rock quality,
Experience and advanced skills are required to ensure the most desirable construction conditions. Moreover, since it is difficult to adjust the pot life, it is often impossible to construct a wide area at once.

[0005] For example, Japanese Patent No. 2620817 discloses a related prior art publication in which a mixture of cement and dry aggregate having a controlled particle size is used as an aggregate component, and the aggregate component is mixed with asphalt when used. A repair method in which the emulsion and the emulsion are mixed and immediately poured is proposed.
No. 43 discloses that a cement asphalt mixture can be obtained by mixing an aggregate and a decomposition promoting material, adding the mixture with a cationic or anionic asphalt emulsion, and then adding and mixing a hydraulic inorganic material such as cement. A method of producing a cement asphalt mixture has been proposed, in which, together with the cement, water and, if necessary, known admixtures for cement, such as shrink repair materials, hardening accelerators, hardening retarders, dispersants, air entrainment Agents, thickeners, water reducing agents, fillers, rubber latex, polymer latex, synthetic latex emulsions, water-soluble synthetic polymers, reactive water-soluble or emulsified synthetic polymers, and their hardeners. Column 6, lines 27-33), and JP-A-5-32446 discloses that coarse aggregate is charged and coarse sand,
There has been proposed a water-permeable room-temperature mixture in which a filler and a cement are added and mixed in this order, and then a modified asphalt emulsion is added and mixed, and a production method thereof.

[0006] However, in the above-mentioned repair method, when the asphalt emulsion is mixed with the above-mentioned aggregate component, the hardening of the cement starts immediately. In the above-mentioned method of producing the cement asphalt mixture, when the cement is added and mixed, the cement is included in the asphalt emulsion. The reaction with water starts, and the pot life is about 2 hours (Publication, column 10, line 27). Further, even in the above water-permeable room-temperature mixture, when the modified asphalt emulsion is mixed, curing starts. None of them could even be stored for a long time after mixing the cement and the asphalt emulsion.

Accordingly, an object of the present invention is to firstly provide a pavement material which can be stored for a long period of time and a method for producing the same.
Second, to provide a pavement material whose pot life can be arbitrarily adjusted and a method of manufacturing the same, and third, to provide a pavement material using a pavement material capable of excellent quality construction. And

[0008]

According to a first aspect of the present invention, there is provided a pavement material comprising an asphalt emulsion to which a setting retarder for cement is added and cement and a weight ratio of 9 except for the weight of the setting retarder.
9 to 20: 1 to 80 to form a pavement binder and to mix aggregate.

According to the first aspect of the present invention, a setting retarder for cement is added to the asphalt emulsion in advance, and the cement is mixed with the retarder to delay the hardening / decomposition reaction of the binder for pavement, so that the unhardened state is obtained. The material for paving can be stored for a long time.

The pavement material according to claim 2 is a material to which a hardening accelerator for cement is added.

According to the second aspect of the present invention, the hardening time can be arbitrarily adjusted by the addition amount of the hardening accelerator for cement, so that the pot life can be easily set and the hardening time can be freely set without being influenced by weather conditions or the like. Can be set to

Further, the pavement material according to claim 3 is a material to which a pigment is added.

According to the third aspect of the present invention, the paving material can be colored.

According to a fourth aspect of the present invention, after the setting retarder for cement is added to the asphalt emulsion, the weight ratio of the asphalt emulsion and cement is reduced to 99 to 20: 1 to 80 except for the weight of the setting retarder. This is a production method in which asphalt emulsion, cement and aggregate are mixed.

According to the structure of the fourth aspect, a pavement material which can be stored for a long time can be obtained. A manufacturing method according to a fifth aspect is a manufacturing method in which, after mixing the asphalt emulsion and cement, a hardening accelerator for cement is added.

According to the fifth aspect of the present invention, the setting time can be arbitrarily adjusted by the amount of the hardening accelerator for cement, so that the setting of the pot life is easy and the setting is possible without being influenced at all by weather conditions or the like. It is possible to obtain a pavement material whose use time can be set arbitrarily and which can be stored for a long time.

Further, the construction method according to claim 6 is based on claim 1.
This is a construction method in which, when laying the described pavement material, the material is spread while adding a hardening accelerator for cement.

According to the sixth aspect of the present invention, since the cement hardening accelerator is added when paving, uniform pavement can be obtained even in a large-scale construction, and this pavement has the flexibility of asphalt pavement. It will have the durability of concrete pavement.

Further, the construction method of claim 7 is based on claim 2.
This is a construction method in which the paving material described is spread and leveled.

According to the structure of claim 7, a pavement having both the flexibility of asphalt pavement and the durability of concrete pavement can be obtained.

Further, the construction method of claim 8 is a construction method in which the paving material according to claim 2 is spread and leveled, and a void is formed inside the spread pavement material.

According to the structure of the eighth aspect, a high-quality pavement having a water-permeable function can be obtained.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS It has heretofore been considered that when cement and asphalt emulsion are mixed, a hardening / decomposition reaction starts immediately, and it is impossible to mix them in advance and store them for a long time. On the other hand, the inventor of the present invention has conducted research and development over many years, previously mixing an arbitrary amount of cement concrete setting retarder in an asphalt emulsion, and adding and mixing cement therein, thereby performing a hardening / decomposition reaction. This greatly delays the premixed cement / asphalt emulsion and enables long-term storage in a liquid state. In the mixing of the cement, it is desirable to use a simple mixer so that the cement is uniformly dispersed in the asphalt emulsion. Further, by stirring during storage after mixing, long-term storage becomes possible. In order to harden the premixed cement / asphalt emulsion, which is a binder for paving, at the time of construction, it is necessary to start a hardening reaction by adding a generally known hardening accelerator for cement concrete (rapid setting material). The curing time can be arbitrarily adjusted by changing the amount of the curing accelerator added. Also, the addition of the setting retarder and the hardening accelerator did not show any decrease in the strength of the pavement material using the premixed cement / asphalt emulsion.

As the material to be used, an asphalt emulsion, a rubber asphalt emulsion, a modified asphalt emulsion modified with rubber, a resin, or the like can be used. Emulsions can be used. As the emulsifier for the asphalt emulsion, various types such as cationic, anionic and nonionic can be used, and a nonionic asphalt emulsion having a good mixability with cement is preferably used. In the experiments described below, a nonionic asphalt emulsion was used. On the other hand, cement is not limited to fineness and type, such as ordinary Portland cement, early strength Portland cement, moderate heat Portland cement, sulfate resistant Portland cement, blast furnace cement, fly ash cement, ultra-hard cement, and other special cements. In the following experiments, ordinary Portland cement was used. Any setting retarder for cement concrete can be used as long as it has a setting retarding effect on cement. In the following experiments, "Palic T" containing oxycarboxylate as a main component (trade name: F. PK Ltd.) was used. Any hardening accelerator (reaction initiator) for cement concrete can be used as long as it has a hardening acceleration effect on cement. In the following experiments, "dencanatomic" consisting of alkali aluminate-alkali carbonate was used. L "(trade name: manufactured by Denki Kagaku Kogyo KK). In addition, the type, particle size,
The material and the like are not particularly limited.

The mixing ratio of the asphalt emulsion to the cement in terms of weight ratio is such that the asphalt emulsion: cement is 99 to 99%.
20: 1 to 80, and preferably 90 to take advantage of the characteristics of both the flexibility of asphalt and the rigidity of cement.
-50: 10-50. Further, a setting retarder is added to the asphalt emulsion in an optional amount with respect to the cement, and the addition amount is preferably 0.2 to 2.0% by weight based on the cement. In the following experiment, the "Palic T"
Was added to the cement in an amount of 1.0% by weight. Further, an optional amount of a hardening accelerator is added to the cement, and the addition amount is preferably 3.0 to 30% by weight based on the cement.
It is. In the following experiment, 20% by weight of “Dencanatomic L” was added to cement. And
A pre-mixed cement / asphalt emulsion can be obtained by adding a setting retarder to the asphalt emulsion and mixing the resultant with the cement.

Experimental Example 1 In Experimental Example 1, an experiment was conducted on the production and hardening of a premixed cement / asphalt emulsion in which cement was mixed with an asphalt emulsion to which a setting retarder was added in advance, and a nonionic asphalt emulsion was used. Asphalt emulsion (fixed content 57%, manufactured by Nichireki Co., Ltd.), "Palic T" as a setting retarder, ordinary Portland cement (manufactured by Denki Kagaku Kogyo KK) as cement, and "Denkanatomic" as a hardening accelerator L "was used.

First, in a nonionic asphalt emulsion,
Add 1% by weight of retarder to the cement added later to form an asphalt emulsion with retarder (1000 g of asphalt emulsion and 5 g of Palic T
And mixed). The asphalt emulsion containing the setting retarder was added to the asphalt emulsion containing the setting retarder such that the weight ratio of the asphalt emulsion (excluding the setting retarder) to the ordinary Portland cement was 2: 1.
Disperse the cement while stirring and mixing with a hand mixer (1005 g of asphalt emulsion containing Palic T
00g of ordinary Portland cement with stirring). It was confirmed that the pre-mixed cement / asphalt emulsion thus produced can be stored for three days while maintaining the initial viscosity. In addition, as a comparative example, when cement was added to the asphalt emulsion under the same conditions except that the setting retarder was not added, it was confirmed that the curing reaction started in a few minutes and the initial viscosity could not be maintained. Furthermore, even when comparing the viscosity with the nonionic asphalt emulsion without mixing the cement, the pre-mixed cement-asphalt emulsion,
It was confirmed that the viscosity was increased within a range that did not affect the use. Further, even by visual inspection, no precipitation of cement was observed in the pre-mixed cement / asphalt emulsion, and good results were obtained in the storage stability test (JIS K2208 Handbook for Pavement Testing). Furthermore, by stirring moderately during storage, stable storage was possible for a long period of time.

Further, to the premixed cement / asphalt emulsion stored for 3 days, a curing accelerator (100 g of denkanatomic L) was added in an amount of 20% by weight based on the cement contained in the emulsion. Was started. After adding the curing accelerator, the curing reaction starts in about 30 minutes,
Thereafter, curing was promoted, and it was confirmed that sufficient hardness was obtained in about 1 to 2 hours so that traffic could be released.

Experimental Example 2 In this experimental example, a cement / asphalt mixture (shown in Table 2) prepared by a conventional method without using a setting retarder and a hardening accelerator, and a premixed cement / asphalt emulsion of the present invention were used. A comparison was made with the mixture used (of Table 2). The premixed cement / asphalt emulsion of the present invention is used after being stored for 24 hours after production, and the hardening accelerator to be added thereto is one in which liquid denkanatomic L is previously mixed in the added water. used. Also, the experiment
The test was carried out in accordance with the uniaxial compression test method of road-based recycled cement / asphalt emulsion stabilization roadbed material described in “Pavement Test Method Handbook” (edited by Japan Road Association).

The following is a detailed description.
Premixed cement / asphalt emulsion manufactured in the same manner as in Experimental Example 1 and stored for 24 hours, nonionic asphalt emulsion (57% solids), ordinary Portland cement, hardening accelerator (Denkanatomic L), and on-site sampling Using the granular roadbed material and the crushed asphalt mixture, the mixing ratio of the aggregates shown in Table 1 below and the mixing ratio of the materials shown in Table 2 were obtained. The optimum water content is 4.9%, the added water is 34.9 g, and the liquid hardening accelerator is 20% based on cement.
Was added and added as part of the added water.

[0031]

[Table 1]

[0032]

[Table 2]

The procedure for preparing a uniaxial specimen of a normal cement / asphalt mixture as a comparative example is described below. First,
The granular roadbed material collected at the site and the crushed asphalt mixture are mixed and added in the order of cement, added water, and asphalt emulsion, and compaction is performed 50 times on each side, and air curing at 25 ° C for 6 days and 25 ° C. The specimen was subjected to underwater curing at C for one day to obtain a test sample of Comparative Example ("conventional product" shown in Table 3).

The procedure for preparing a uniaxial specimen using the premixed cement / asphalt emulsion of the present invention is as follows:
First, the ground roadbed material collected at the site and the crushed asphalt mixture are mixed, the added water containing the hardening accelerator is mixed, then the premixed cement / asphalt emulsion is mixed, and the compaction is performed 50 times on each side, After curing in air at 25 ° C for 6 days and underwater curing at 25 ° C for 1 day, a specimen of the present invention ("the present invention" shown in Table 3) was obtained.

As described above, the “conventional product” is a normal CA
A specimen prepared using E, and the “product of the present invention”
Table 3 shows the specimens prepared using the premixed cement / asphalt emulsion, and the results of the uniaxial test of the prepared specimens are shown in Table 3 below. The test conditions were curing at 30 ° C. for 30 minutes in water and a compression speed of 1 mm / min.

[0036]

[Table 3]

As shown in Table 3 above, a test piece manufactured by a usual method ("conventional product" shown in Table 3) and a test piece using the premixed cement / asphalt emulsion of the present invention (Table 3) Properties of the present "product of the present invention"),
Using the stored premixed cement / asphalt emulsion did not decrease the strength and had no effect on the strength of the set retarder and the set accelerator.

The time required for the uniaxial compressive strength to reach 15 kg / cm ² was determined as the “conventional product”, and the “product of the present invention” in which the added amount of the additives (setting retarder and hardening accelerator) was changed. A test was performed on the case. This test was performed at 20 ° C
Perform air curing for the time set in, and other conditions
The test was performed in accordance with the uniaxial compression test method for road-based recycled cement / asphalt emulsion-stabilized roadbed material described in “Pavement Test Method Handbook” (edited by Japan Road Association). The curing speed was set at a compression speed of 1 mm / min, and the curing time when the uniaxial compression strength reached 15 kg / cm ² was measured. The results are shown in Table 4 below.

[0039]

[Table 4]

Thus, the premixed cement of the present invention
The curing time of the pavement material using the asphalt emulsion could be arbitrarily adjusted by changing the amount of the additive.

In the present invention, a setting retarder containing an organic compound as a main component is preferably used. The setting delay effect of this organic compound, the coating of the organic compound adsorbed on the cement particle surface inhibits the contact between cement and water,
This is thought to be to temporarily stop the hydration reaction of the cement.By adding this setting retarder to the asphalt emulsion in advance, even if the asphalt emulsion and the cement are mixed, the start of the hardening reaction is greatly delayed. Thus, long-term storage in a liquid state became possible. In addition, it has been clarified by an experiment that the setting retarder exhibits the same strength and durability as that when no additive is added. Furthermore, a curing reaction can be started by adding a commonly used hardening accelerator for cement concrete (rapid setting material) to the premixed cement / asphalt emulsion of the present invention.

Test Construction Example 1 Using a premixed cement / asphalt emulsion according to the present invention as a binder for paving using a heated asphalt plant, a pavement material for surface layer at room temperature (dense particle mixture, maximum particle size 1
3mm) was manufactured and paved.

The pre-mixed cement / asphalt emulsion was supplied directly from an emulsifier to an asphalt measuring tank. At this time, no clogging occurred in the premixed cement / asphalt emulsion line.

In the production and construction of the surface pavement material, the production could be carried out in the same manner as with the heated asphalt mixture without passing through a dryer. The details will be described with reference to the flowchart of FIG. 1. An aggregate and a filler are mixed by a mixer such as a pug mill mixer (S1).
The pre-mixed cement / pavement binder
The asphalt emulsion was added and mixed (S2), and transported to a pavement site by a dump truck (S3). At the pavement site, from a remixer equipped with a mixing machine such as a pug mill mixer, a re-mixer spraying device is used to spread an appropriate amount of a hardening accelerator and spread the paving material (S4). It was rolled (S5) and compacted sufficiently. After curing (S6) and curing, the traffic is released.

The pavement material spread at the pavement site was sampled at each of a plurality of measurement points, and specimens for a marshall stability test and a wheel tracking test were prepared and tested. Test specimens were prepared from the pavement materials, cured at room temperature for 3 hours and 7 days, and then tested according to the respective test methods. still,
The test temperature for curing for 3 hours was 20 ° C. and the test temperature after curing for 7 days was 60 ° C. in accordance with “Pavement Test Method Handbook” (edited by Japan Road Association). The "conventional product" shown in the table is a mixture using a cement / asphalt emulsion not according to the present invention, and has the same conditions except that no setting retarder and hardening accelerator are used. The "heated mixture" is a heated asphalt mixture prepared according to the pavement test manual.

The results of the Marshall stability test are shown in Table 5 below.
The results of the wheel tracking test are shown in Table 6 below.

[0047]

[Table 5]

[0048]

[Table 6]

As shown in Tables 5 and 6, when the pavement material of the present invention is produced in a plant, the same result as that of the heated asphalt mixture is obtained, and the dispersibility of the curing accelerator is reduced. I found that there was no problem. In the construction, good pavement was able to be performed. Further, the obtained pavement material was superior in flow resistance (dynamic stability) to the heated asphalt mixture.

The surplus pavement material which was not used for paving in the present test execution example 1 but did not contain a hardening accelerator and was stored at room temperature for 3 days was similarly subjected to a marshalling stability test and wheel tracking. Test specimens were prepared and tested. The hardening accelerator was added and mixed in the same amount before compacting. The results are also substantially the same as those of the product of the present invention shown in Tables 5 and 6, and it has been found that the same quality can be maintained even after the produced pavement material is stored for a long period of time.

Test Construction Example 2 In the same manner as in Test Construction Example 1, a premixed cement / asphalt emulsion of the present invention was used as a pavement binder using a heated asphalt plant, and a room temperature pavement material for surface layer (dense particle mixture maximum particle size). (Diameter 13 mm) was manufactured and paved.

The premixed cement / asphalt emulsion was supplied directly from an emulsifier to an asphalt measuring tank. At this time, no clogging occurred in the premixed cement / asphalt emulsion line.

In the production and construction of the surface pavement material, the production and construction could be carried out in the same manner as in the case of the ordinary heated asphalt mixture except that a curing accelerator was added without passing through a dryer. The details will be described with reference to the flowchart of FIG. 2. An aggregate / filler is mixed by a mixer such as a pug mill mixer (S11), and a cement / asphalt emulsion is added thereto and mixed (S12).
Further, a curing accelerator was added and mixed from a plant mix type additive supply device (S13). The paving material produced in this manner is transported to a pavement site by a dump truck (S14), paving is performed in the same paving system as that of an ordinary general heated asphalt mixture, and the paving material is spread with an asphalt finisher. Leveling (S15), rolling was performed with a Macadam roller and a tire roller (S16), and compacting was sufficiently performed. Then, after curing (S17) and curing,
Traffic opened. In addition, the order of (S12) and (S13) is reversed, the aggregate and filler are mixed (S11), the hardening accelerator is added and mixed with this (S13), and the pre-mixed cement / asphalt emulsion is further added. Addition and mixing (S12) may be performed.

The pavement material of the present invention ("the present invention" shown in the table) produced by the above-mentioned asphalt plant was collected, and a test piece was prepared for a marshalling stability test and a wheel tracking test. After production of paving materials 1
After a lapse of time, test specimens were prepared, cured at room temperature for 3 hours and 7 days, and tested according to each test method. In addition, based on the “Pavement Test Method Handbook” (edited by the Japan Road Association), the test temperature for curing for 3 hours was 20 ° C,
The test temperature after curing for 7 days was 60 ° C. Incidentally, the "conventional products" shown in the table are those using a cement / asphalt mixture not according to the present invention, and under the same conditions, except that the setting retarder and the hardening accelerator are not used. The "heated mixture" is a heated asphalt mixture prepared according to the pavement test manual.

Table 7 below shows the results of the Marshall stability test.
The results of the wheel tracking test are shown in Table 8 below.

[0056]

[Table 7]

[0057]

[Table 8]

As shown in Tables 7 and 8 above, when the pavement material of the present invention was manufactured in a plant, the same result as that of the heated asphalt mixture was obtained. In addition, in the construction, transportation by dump truck, spreading and leveling with asphalt finisher, rolling with roller can be performed by the same work as paving of general asphalt mixture, special construction method and construction There was no need to use a machine. Further, the obtained pavement material was superior in flow resistance (dynamic stability) to the heated asphalt mixture. Further, in the test execution example 2, it is not necessary to add a curing accelerator on site as in the test execution example 1 described above.
The pavement material can be used as it is on site, and construction can be performed using a pavement machine used for ordinary asphalt pavement and the like.

Test Construction Example 3 A pavement (pigment) was added to the same pavement material as in Test Construction Example 2 above.
The pavement was added and subjected to construction and tests. The results were almost the same as those of the test pavement example 2, and it was found that the pavement using the pigment could be colored. In addition, although inorganic pigments, organic pigments, extenders and the like are used, the pigments to be added are not particularly limited, for example, titanium oxide, zinc white, chromium oxide,
Yellow lead, yellow ocher, and the like can also be used.

Test execution example 4 In the same manner as in the above test execution example 1, a pavement material for a normal temperature surface layer having a water permeability function (open particle size mixture, maximum particle size: 13 mm)
Was manufactured and paved, and a high-quality pavement having voids required for the water permeability function was obtained.

Test Construction Example 5 A repairing material was formed by adding and mixing a hardening accelerator to the premixed cement / asphalt emulsion of the present invention, and the material was repaired by filling a crack in a concrete pavement. Also,
The repair material was filled into the joints of the bridge to make joint materials. Further, the cement / asphalt mixture was mixed with an aggregate such as sand and a hardening accelerator, and used as a backfill material for a tunnel or the like. In each case, good results were obtained.

Since the pot life of the pavement material can be easily set as described above and can be set arbitrarily without being influenced by weather conditions or the like, the most desirable construction conditions can be secured. It has become easier to ensure higher quality. In addition, there is no need to construct a dedicated plant, and existing heating asphalt plants, ready-mixed concrete plants, mobile continuous plants, etc., provided that they are equipped with a mixer and a measuring device, all can be manufactured. Since the pot life can be set arbitrarily, the produced pavement material can be transported over long distances and for a long time, thereby enabling pavement construction of the same quality in all areas including remote islands and mountainous areas. . Further, the pavement material of the present invention produced by using the premixed cement / asphalt emulsion as a pavement binder can be stored for a long period of time, and thus can contribute to an improvement in plant efficiency, and can further contribute to weather deterioration. Therefore, even when the construction is postponed, material loss can be eliminated. In addition, the manufactured pavement material can be stored for a long period of time, so even if construction is performed at night,
It can be stored, and the problem of night noises associated with manufacturing can be eliminated. What is particularly noteworthy is that there is no need to specifically select an aggregate by using a reactive asphalt emulsion. In addition, a dedicated machine is not required for slurry sealing and microsurfing.

As described above, in this embodiment, the weight ratio of the asphalt emulsion to which the setting retarder for cement is added and the cement are 99 to 20: 1, excluding the weight of the setting retarder, according to the first aspect. The mixture was mixed at ~ 80 to form a pre-mixed cement asphalt emulsion as a pavement binder, and since it was a pavement material mixed with aggregates, a setting retarder for cement was added to the asphalt emulsion in advance. By mixing the cement, the curing / decomposition reaction of the paving binder is delayed, and the paving material can be stored in an uncured state for a long time.

As described above, in this embodiment,
Corresponding to claim 2, since it is a pavement material to which a hardening accelerator for cement is added, since the hardening time can be arbitrarily adjusted by the amount of the hardening accelerator for cement, the setting of the pot life is easy, It can be set arbitrarily without being influenced by weather conditions or the like.

Further, in this embodiment, as described above, according to the third aspect, since the pavement material contains a pigment, the pavement material can be colored.

As described above, in the present embodiment, after the setting retarder for cement is added to the asphalt emulsion, the weight ratio of the asphalt emulsion and cement is reduced except for the weight of the setting retarder. 99-20: 1-8
0, it is a production method in which the asphalt emulsion, cement and aggregate are mixed, so that a pavement material that can be stored for a long time can be obtained.

As described above, in this embodiment,
Corresponding to claim 5, after mixing the asphalt emulsion and cement, it is a manufacturing method of adding a hardening accelerator for cement, so that the hardening time can be arbitrarily adjusted by the amount of the hardening accelerator for cement, Easy setting of pot life,
The pot life can be arbitrarily set irrespective of weather conditions and the like, and a pavement material that can be stored for a long time can be obtained.

Further, as described above, in this embodiment, when laying the pavement material according to claim 1, when paving the paving material according to claim 1, the cementing accelerator is added to spread the paving material. Therefore, even in large-scale construction, uniform pavement can be obtained, and this pavement has both the flexibility of asphalt pavement and the durability of concrete pavement. Also, even if the construction is postponed due to weather conditions, etc., the pavement material can be stored and used for construction after the postponement,
No material loss.

Further, as described above, in this embodiment, in accordance with the seventh aspect, since the construction method of laying the pavement material according to the second aspect is applied, the flexibility of the asphalt pavement and the durability of the concrete pavement are improved. A pavement having both properties can be obtained. In addition, since construction can be performed using a pavement machine used for ordinary asphalt pavement or the like, there is no need to use a special construction method or construction machine, and a pavement machine used for ordinary asphalt pavement or the like is used. Construction can be performed.

It should be noted that the method of adding the hardening material according to claim 6 on site and the method of adding it in a plant or the like according to claim 7 are selected in accordance with the intended use, so that the conditions are met. Optimal construction is possible.

Furthermore, in the present embodiment, the paving material according to claim 2 is spread and spread, and voids are formed inside the spread pavement material. Because of the construction method, a high-quality pavement having a water-permeable function can be obtained.

As an effect of the embodiment, by using the pavement binder or the pavement material of the present invention, it is possible to obtain a repair material, a filler, a joint material, etc. excellent in workability.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, various types of cement, asphalt emulsion, setting retarder and hardening accelerator can be used. Further, fine aggregate, coarse aggregate and the like can be appropriately compounded as the aggregate to be used. Further, the present invention can be used not only for roads for vehicles but also for pavements such as sidewalks, parking lots, and runways where high slip resistance is required. Furthermore, the order of mixing the asphalt emulsion, the cement and the aggregate can be appropriately selected. In short, a setting retardant may be added to the asphalt emulsion before mixing with the cement.

[0074]

According to the first aspect of the present invention, the weight ratio of the asphalt emulsion to which the setting retarder for cement is added to the cement is 99 to 20: 1 to 8 except for the weight of the setting retarder.
0 to form a pavement binder and a mixture of aggregates, thereby providing a pavement material that can be stored for a long period of time.

The pavement material according to claim 2 is a material to which a hardening accelerator for cement is added, and can provide a pavement material whose pot life can be arbitrarily adjusted.

Further, the pavement material according to claim 3 is a material to which a pigment is added, and can provide a pavement material that can be stored for a long period of time.

According to a fourth aspect of the present invention, in the method of the present invention, after the setting retarder for cement is added to the asphalt emulsion, the weight ratio of the asphalt emulsion and cement is reduced to 99 to 20: 1 to 80 except for the weight of the setting retarder. This is a production method in which asphalt emulsion, cement and aggregate are mixed, and a method for producing a pavement material that can be stored for a long time can be provided.

A method according to a fifth aspect of the present invention is a method for manufacturing a pavement, comprising mixing the asphalt emulsion and cement and then adding a hardening accelerator for cement. A manufacturing method can be provided.

Further, the construction method according to claim 6 is based on claim 1.
This is a construction method in which a paving material described is laid while adding a hardening accelerator for cement, and a construction method using a paving material capable of performing construction with excellent quality can be provided.

Further, the construction method of claim 7 is based on claim 2
This is a construction method in which the described pavement material is spread and leveled, and a construction method using a pavement material capable of performing construction with excellent quality can be provided.

Further, the construction method according to claim 8 is a construction method in which the paving material according to claim 2 is spread and a void is formed inside the spread paving material, and has a water permeability function. In addition, it is possible to provide a construction method using a pavement material capable of performing construction with excellent quality.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a construction example of the present invention.

FIG. 2 is a flowchart showing another construction example of the present invention.

Claims (8)

[Claims] 1. A pavement binder is formed by mixing an asphalt emulsion containing a setting retarder for cement and cement in a weight ratio of 99 to 20: 1 to 80 excluding the weight of the setting retarder, and forming a bone for paving. Pavement material characterized by mixing wood. 2. The pavement material according to claim 1, wherein a hardening accelerator for cement is added. 3. The pavement material according to claim 1, further comprising a pigment. 4. After adding a setting retarder for cement to the asphalt emulsion, the weight ratio of the asphalt emulsion and cement is reduced to 99 to 20: 1 to 8 except for the weight of the setting retarder.
0. A method for producing a pavement material, comprising mixing the asphalt emulsion, cement and aggregate. 5. The method for producing a pavement material according to claim 4, wherein a hardening accelerator for cement is added after mixing the asphalt emulsion and cement. 6. A construction method using a pavement material, wherein the pavement material according to claim 1 is laid while adding a hardening accelerator for cement. 7. A construction method using a pavement material, wherein the pavement material according to claim 2 is spread. 8. The paving material according to claim 2 is spread and leveled,
A construction method using a paving material, characterized in that a void is formed inside the spread paving material.